The control of civil, energy, and power systems presents significant new challenges for modeling and control theory. The purpose of this special issue is to provide a forum for researchers and practical engineers to d...The control of civil, energy, and power systems presents significant new challenges for modeling and control theory. The purpose of this special issue is to provide a forum for researchers and practical engineers to discuss the recent advances in modeling and control technology development for civil, energy, and power systems. Prospective authors are invited to submit their original contributions with the focus on theory or applications of modeling, control and decision. Topics of interest include modeling and control of, but are not limited to, the following：展开更多
As a hot spot of next generation network, research over resource control has been carried out for years both in China and abroad. With a gradual progress in standardization, this field presents new development trends ...As a hot spot of next generation network, research over resource control has been carried out for years both in China and abroad. With a gradual progress in standardization, this field presents new development trends and features. Based on latest progresses in standardization promoted by ITU-T, TISPAN and 3GPP, new technologies concerned with resource control are introduced. Considering the problems faced in standardization deployment, relevant resource control functions are also analyzed in this article.展开更多
It is imperative to understand the spatial and temporal coordination deformation mechanism and develop targeted deformation control technologies for high sidewall—bottom transfixion(HSBT)zones to guarantee the stabil...It is imperative to understand the spatial and temporal coordination deformation mechanism and develop targeted deformation control technologies for high sidewall—bottom transfixion(HSBT)zones to guarantee the stability of rock surrounding underground hydro-powerhouses under complex geological conditions.In this study,the spatial and temporal coordinated deformation control of HSBT zones was addressed from the aspects of the deformation mechanism,failure characteristics,and control requirements,and some coordinated deformation control technologies were proposed.On this basis,a case study was conducted on the deformation control of the HSBT zone of the underground powerhouse at the Wudongde hydropower station,China.The results showed that the relationship between excavation and support,and the mismatch of deformation and support of the surrounding rock mass in the HSBT zone of underground caverns with a large span and high in-situ stress can be appropriately handled.The solution requires proper excavation and construction procedures,fine blasting control,composite and timely support,and real-time monitoring and dynamic feedback.The technologies proposed in this study will ensure the safe,high-quality,and orderly construction of the Baihetan and Wudongde underground caverns,and can be applied to other similar projects.展开更多
Energy and power systems technology is a fundamental field in the civil engineering.Innovation in power generation,grid intelligence,renewable resources,propulsion and powertrains for transportation devices,etc.is a l...Energy and power systems technology is a fundamental field in the civil engineering.Innovation in power generation,grid intelligence,renewable resources,propulsion and powertrains for transportation devices,etc.is a long-term challenging theme for science and technology.Especially,improving the efficiency and the emission in energy con-展开更多
The pipeline all-position automatic welding machine system is a special welding system for automatically welding circumferential joint of pipeline on site, which has been widely used to the long-distance pipeline cons...The pipeline all-position automatic welding machine system is a special welding system for automatically welding circumferential joint of pipeline on site, which has been widely used to the long-distance pipeline construction projects due to the advantages of automatic control for welding parameters at all-position, moving speed of bugs and operating. In this paper, the key control technologies of PAWM all-position automatic welding machine （ developed by Pipeline Research Institute of CNPC） such us the automatic control system, control software, personal digital assistant （PDA） software and complex programmable logic device （ CPLD ） program as well us the control method of welding parameter have been described detailedly. With the higher welding quality, higher welding effwiency and lower labor intensity, PA WM all-position automatic welding machine has been successfully applied in many famous pipeline construction projects.展开更多
Biological contaminants(BCs),including but not limited to various pathogens and their endogenous pol-lutants such as intracellular pathogens and antimicrobial resistance genes(ARGs),are ubiquitously detected in efflue...Biological contaminants(BCs),including but not limited to various pathogens and their endogenous pol-lutants such as intracellular pathogens and antimicrobial resistance genes(ARGs),are ubiquitously detected in effluent of wastewater and drinking water treatment systems which were originally designed to remove common indicator bacteria,resulting in potential impacts on public health.Although there are many emerging technologies that showing promising antimicrobial effects,few have progressed to the actual water scenarios.It’s crucial to understand the main knowledge gaps and thereby design the future developments to better meet engineering requirements.In this review,we first summarize the perfor-mance of conventional water treatment towards BCs removal.Then we showcase the advances of proof-of-concept strategies,including nanotechnology,advanced oxidation process,biological control process and integrated techniques,for BCs control in light of antimicrobial mechanisms,characteristics,proper niches in water treatment,challenges and latest improvements.Further,we proposed a semi-quantitative framework coupling life cycle assessment(LCA)and analytic hierarchy process(AHP)to assess and compare the application potential of representative pilot technologies,in which the antimicro-bial effects,economic issues and sustainability are comprehensively considered.For wastewater treat-ment,non-thermal plasma weights highest among the emerging technologies and outperforms conventional disinfection in terms of efficacy indicators(overall inactivation rate,ARGs removal rate,and growth inhibition),but fall behind overall mainly due to more energy input.Bacteriophage-based treatment has the potential to synergistically inactive the persistent pathogens in combination with con-ventional disinfection,serving as a cost-effective and environmental-friendly supplement.For drinking water treatment,the integrated photocatalytic nanocomposite receives the highest application potential among the emerging technologies and appears to be supplementary or even alternative next-generation disinfectants.This review shares valuable insights to propel the proof-of-concept antimicrobial trials towards industrial procedures.展开更多
A CLLC converter is a high-frequency,high-efficiency,isolated bidirectional DC/DC converter that is widely used in DC microgrid applications.The typical topology and basic working principle of CLLC converters are intr...A CLLC converter is a high-frequency,high-efficiency,isolated bidirectional DC/DC converter that is widely used in DC microgrid applications.The typical topology and basic working principle of CLLC converters are introduced herein.Subsequently,both analysis methods and control technologies are reviewed.On the one hand,several steady-state analysis models are listed,consisting of a harmonic approximation-based model in the frequency domain and a state equation-based model in the time domain,and some initial dynamic models are also included.On the other hand,numerous new control technologies are presented for different targets,such as soft startup control methods from a safety perspective,synchronous rectification(SR)control methods for efficiency optimization,highly dynamic control methods for better performance,bidirectional switching control methods,and wide voltage gain control methods aimed at popular vehicle-to-grid(V2G)and electric vehicle(EV)charging application scenarios.Finally,the future evolution of CLLC resonant converters is discussed.展开更多
Arsenic(As),classified as a Group I carcinogen by the International Agency for Research on Cancer(IARC),poses severe risks to ecosystems and human health through atmospheric exposure.This review synthesizes current kn...Arsenic(As),classified as a Group I carcinogen by the International Agency for Research on Cancer(IARC),poses severe risks to ecosystems and human health through atmospheric exposure.This review synthesizes current knowledge on the sources,health impacts,and control strategies of atmospheric arsenic,with an emphasis on its global transport and toxicity.Natural sources,such as volcanic eruptions and soil erosion,contribute approximately 2.1 Gg/year;however,anthropogenic activities,notably metal smelting and coal combustion,dominate emissions,with global anthropogenic releases reaching approximately 28.6 Gg/year.Atmospheric arsenic primarily exists in two forms:particulate matter(PM_(2.5)-bound As(Ⅴ)/As(Ⅲ)and methylated species)and gaseous forms(e.g.,AsH_(3),As_(2)O_(3)),facilitating long-range transport and cross-continental pollution,as evidenced by Asian emissions contributing 39% of Arctic deposition.Advanced techniques,such as inductively coupled plasma mass spectrometry(ICP-MS)and models like GEOS-Chem,enhance emission tracking;however,gaps persist in monitoring gaseous arsenic and refining emission inventories.Health risks include lung cancer,neurotoxicity,and cardiovascular diseases,exacerbated by inhalation and dietary exposure via contaminated crops.Control technologies,including calcium-and iron-based adsorbents and industrial scrubbers,show promise but face challenges related to efficiency and cost.Regional strategies,such as China’s tightened emission limits(0.5 mg/m^(3))and the EU’s Best Available Techniques(BAT),highlight progress,yet global cooperation remains vital for transboundary mitigation.Future research should prioritize low-cost sensors,elucidating speciation-toxicity relationships,and AI-driven emission management to address data gaps and optimize policies.Integrating multidisciplinary approaches—advanced science,stringent regulations,and international collaboration—is crucial to mitigate the environmental and public health impacts of arsenic amid growing industrialization and climate change.展开更多
In the current social environment,the importance of energy conservation and emission reduction is increasing day by day for both the country and its people.Electronic and electrical products,as important items for peo...In the current social environment,the importance of energy conservation and emission reduction is increasing day by day for both the country and its people.Electronic and electrical products,as important items for people’s production and life,require high attention from industry insiders in terms of their energy efficiency testing.Relying on energy efficiency testing can achieve the goal of energy conservation and emission reduction,and related quality control technologies will also inject new momentum into the green development of the industry.This article will discuss the practical strategies of quality control technology for energy efficiency testing of electronic and electrical products based on the significance of such testing,hoping to provide some help.展开更多
Chinese diesel trucks are the main contributors to NOx and particulate matter(PM)vehicle emissions.An increase in diesel trucks could aggravate air pollution and damage human health.The Chinese government has recently...Chinese diesel trucks are the main contributors to NOx and particulate matter(PM)vehicle emissions.An increase in diesel trucks could aggravate air pollution and damage human health.The Chinese government has recently implemented a series of emission control technologies andmeasures for air quality improvement.This paper summarizes recent control technologies and measures for diesel truck emissions in China and introduces the comprehensive application of control technologies and measures in Beijing-Tianjin-Hebei and surrounding regions.Remote onlinemonitoring technology has been adopted according to the China VI standard for heavy-duty diesel trucks,and control measures such as transportation structure adjustment and heavy pollution enterprise classification control continue to support the battle action plan for pollution control.Perspectives and suggestions are provided for promoting pollution control and supervision of diesel truck emissions:adhere to the concept of overall management and control,vigorously promote the application of systematic and technological means in emission monitoring,continuously facilitate cargo transportation structure adjustment and promote new energy freight vehicles.This paper aims to accelerate the implementation of control technologies and measures throughout China.China is endeavouring to control diesel truck exhaust pollution.China is willing to cooperate with the world to protect the global ecological environment.展开更多
Plant diseases affect the cultivation of Chinese herbal medicines,while traditional chemical pesticides have many drawbacks such as environmental pollution,health risks and disruption of ecological balance.Microbiocon...Plant diseases affect the cultivation of Chinese herbal medicines,while traditional chemical pesticides have many drawbacks such as environmental pollution,health risks and disruption of ecological balance.Microbiocontrol has gradually appeared in public view,and its application has become increasingly extensive.This paper reviews the disease-causing species of medicinal plants,including fungal,bacterial,nematode,viral and parasitic pests,and reviews the diseases caused by microorganisms in traditional Chinese medicine planting and their biological control by consulting Sciencedirect databases and Web of Science databases.4667 related articles were found,of which 552 were related to microbiocontrol technology and cultivation of traditional Chinese medicines.This review provides a reference for the green planting technology of traditional Chinese medicine.展开更多
Thermal-force driving of roll profile electromagnetic control technology(RPECT),which can be used to adjust the roll profile,can be affected by the sequential temperature rise between the electromagnetic stick(ES)and ...Thermal-force driving of roll profile electromagnetic control technology(RPECT),which can be used to adjust the roll profile,can be affected by the sequential temperature rise between the electromagnetic stick(ES)and electromagnetic control roll.Due to the limited space of ES and induction coil,the cross-sectional area of induction coil can be inevitably affected by changing the size of the ES induction zone,which can further change the energy input under the same electromagnetic parameters,the temperature rising effect and the bulging ability.To investigate this phenomenon,the effects of the radius of the induction zone on the thermal-force contribution ratio,the heating ability of ES and the temperature distribution were analyzed through an electromagnetic-thermal-structural finite element model.To ensure that the results are applicable to RPECT,the thermal energy conversion ability and thermal-force roll crown control ability under different lengths of the induction zone were analyzed.It was found that whether the current density regulation mode or the current frequency regulation mode is adopted,the cases with 20 or 25 mm radius of the induction zone have the great thermal energy conversion ability and the good thermal-force roll crown control ability.The reasonable adjustment of the length of the induction zone can reduce the radius required for the maximum energy efficiency regulation.Combined with the results of the simulation analysis,the optimization of ES based on the control ability maximization requirement is achieved,which provides the base for the design and configuration of ES in RPECT.展开更多
To achieve stable rolling,the influence of a tension mechanism of a large diameter ratio roll system on the rolling process of a strip flatness electromagnetic control rolling mill is studied.Through the analysis of t...To achieve stable rolling,the influence of a tension mechanism of a large diameter ratio roll system on the rolling process of a strip flatness electromagnetic control rolling mill is studied.Through the analysis of the rolling deformation zone,the deformation zone composition form of a large diameter ratio roll system and a calculation formula of neutral angle under tension are proposed.To analyze the effect of front and post tensions on the rolling characteristic and the strip flatness control characteristic,a three-dimensional rolling finite element(FE)model of a large diameter ratio roll system with the function of roll profile electromagnetic control is established by FE software and verified by a strip flatness electromagnetic control rolling mill.Based on the model,the strip thickness characteristic,metal transverse flow,strip flatness state,and adjustment range of the loaded roll gap are analyzed for different front and post tensions setting values.The results show that changing the front or post tension setting values can improve the single-pass reduction rate of a large diameter ratio roll system and have little effect on the flatness control ability of the strip flatness electromagnetic control rolling mill.展开更多
Automatic control technology is the basis of road robot improvement,according to the characteristics of construction equipment and functions,the research will be input type perception from positioning acquisition,real...Automatic control technology is the basis of road robot improvement,according to the characteristics of construction equipment and functions,the research will be input type perception from positioning acquisition,real-world monitoring,the process will use RTK-GNSS positional perception technology,by projecting the left side of the earth from Gauss-Krueger projection method,and then carry out the Cartesian conversion based on the characteristics of drawing;steering control system is the core of the electric drive unmanned module,on the basis of the analysis of the composition of the steering system of unmanned engineering vehicles,the steering system key components such as direction,torque sensor,drive motor and other models are established,the joint simulation model of unmanned engineering vehicles is established,the steering controller is designed using the PID method,the simulation results show that the control method can meet the construction path demand for automatic steering.The path planning will first formulate the construction area with preset values and realize the steering angle correction during driving by PID algorithm,and never realize the construction-based path planning,and the results show that the method can control the straight path within the error of 10 cm and the curve error within 20 cm.With the collaboration of various modules,the automatic construction simulation results of this robot show that the design path and control method is effective.展开更多
In order to enhance the yield and quality of cashew,it is essential to implement high-yield cultivation techniques effectively throughout the production process.Additionally,pest control measures should be employed to...In order to enhance the yield and quality of cashew,it is essential to implement high-yield cultivation techniques effectively throughout the production process.Additionally,pest control measures should be employed to provide technical support for the industrialized development of cashew.展开更多
The article mainly studies the application strategy of automatic addressable single-lamp control technology in tunnel lighting.It encompasses an introduction to this technology,an analysis of the tunnel lighting syste...The article mainly studies the application strategy of automatic addressable single-lamp control technology in tunnel lighting.It encompasses an introduction to this technology,an analysis of the tunnel lighting system using automatic addressable single-lamp control technology,and outlines the main development direction for this technology in modern tunnel lighting.The aim is to offer insights that can inform the rational deployment of this technology,thereby enhancing the lighting control effectiveness in modern tunnels and meeting their specific lighting requirements more effectively.展开更多
Heavy metal pol ution, especial y cadmium pol ution, has threatened the safety production of rice. The research advance on law of absorption, distribution and accumulation of cadmium in rice and on recent safety contr...Heavy metal pol ution, especial y cadmium pol ution, has threatened the safety production of rice. The research advance on law of absorption, distribution and accumulation of cadmium in rice and on recent safety control technology of cadmium in rice grain was summarized in this paper. We hoped to lay a foundation for the safety production of rice.展开更多
[ Objective ] The study aimed to effectively and timely control the occurrence and damage of Rhyrthophorus femuneus Fabricius in Nanning City, Guangxi Province. [Method]The investigation on the distribution and damage...[ Objective ] The study aimed to effectively and timely control the occurrence and damage of Rhyrthophorus femuneus Fabricius in Nanning City, Guangxi Province. [Method]The investigation on the distribution and damage of R. ferrugineus was conducted in Nanning City, Guangxi Province. Its transmit ways were chocked, light trapping experiment, combination of artificial and chemical control, and chemical control were conducted. [ Result] The investigation indicated that there had distribution of R. ferrugineus in 70% plant nurseries and the scenic areas in Nanning City. Among the planted Hemp palm plants, the damaged vari- eties were up to 80%. The output of palm seedlings which had carried with pests was the main approach for spread and damage of R. ferrugineus. It was effective and feasible to use frequently vibration trapping light to trap adults. Pesticides were sprayed on the bellmouth of host （ central leaf）, then aging leaf sheaths or agri- cultural film was used to strap tender leaf sheath in stalks, which could achieve the purpose of controlling R. femugineus. [ Conclusion ] The control strategies of R. femugineus should be focused on controlling seedlings and the plants with tree age less than ten year; the plants with long tree age and the tall plants should adopt selection control if it was necessary, and the integrated control should be implemented on the prevention measure.展开更多
[Objective] The aim was to screen economic and environment-friendly pesticides adaptive to aphid-resistant varieties in main rape growing regions of Yunnan Province.[Method] The effects of 6 pesticides against aphids ...[Objective] The aim was to screen economic and environment-friendly pesticides adaptive to aphid-resistant varieties in main rape growing regions of Yunnan Province.[Method] The effects of 6 pesticides against aphids on 22 Brassica campestris materials of the main breeds in Yunnan Province,the new improved varieties in China and the core breeding materials were tested.[Result] Yunyoushuang 1,Huayou 4,Yunhuayou Early-maturing Variety No.1 and A35 showed better aphid-resistance.An optimum pesticide application strategy was to use Diyaling in sowing time,and interchangeably apply nitenpyram and imidacloprid during flowering and pod formation stages.[Conclusion] The present study had provided an important technical support for sustainable development of rape industry.展开更多
Reproductive organ disease of geese is an endemic and multiple infectious disease in large-scale breeding of breeding geese, especially in anti-season production, which brings a great economic loss to goose production...Reproductive organ disease of geese is an endemic and multiple infectious disease in large-scale breeding of breeding geese, especially in anti-season production, which brings a great economic loss to goose production. To make effective prevention and control of reproductive organ disease of breeding geese under the anti-season breeding mode, the characteristics of control principles of infectious diseases of the poultry and the occurrence and prevalence of reproductive organ disease must be combined, so as to carry out scientific prevention and control.At the same time, according to the climate characteristics of summer, the feeding and management of breeding geese and water quality control should also be done well, and many corresponding measures should also be taken, thus obtaining better effect.展开更多
文摘The control of civil, energy, and power systems presents significant new challenges for modeling and control theory. The purpose of this special issue is to provide a forum for researchers and practical engineers to discuss the recent advances in modeling and control technology development for civil, energy, and power systems. Prospective authors are invited to submit their original contributions with the focus on theory or applications of modeling, control and decision. Topics of interest include modeling and control of, but are not limited to, the following：
文摘As a hot spot of next generation network, research over resource control has been carried out for years both in China and abroad. With a gradual progress in standardization, this field presents new development trends and features. Based on latest progresses in standardization promoted by ITU-T, TISPAN and 3GPP, new technologies concerned with resource control are introduced. Considering the problems faced in standardization deployment, relevant resource control functions are also analyzed in this article.
基金This work is supported by the National Natural Science Foundation of China(Nos.51979146 and 12102230)the China Three Gorges Corporation Research Program(Nos.WDD/0490,WDD/0578,and BHT/0774)the China Postdoctoral Science Foundation(No.2022M711862).
文摘It is imperative to understand the spatial and temporal coordination deformation mechanism and develop targeted deformation control technologies for high sidewall—bottom transfixion(HSBT)zones to guarantee the stability of rock surrounding underground hydro-powerhouses under complex geological conditions.In this study,the spatial and temporal coordinated deformation control of HSBT zones was addressed from the aspects of the deformation mechanism,failure characteristics,and control requirements,and some coordinated deformation control technologies were proposed.On this basis,a case study was conducted on the deformation control of the HSBT zone of the underground powerhouse at the Wudongde hydropower station,China.The results showed that the relationship between excavation and support,and the mismatch of deformation and support of the surrounding rock mass in the HSBT zone of underground caverns with a large span and high in-situ stress can be appropriately handled.The solution requires proper excavation and construction procedures,fine blasting control,composite and timely support,and real-time monitoring and dynamic feedback.The technologies proposed in this study will ensure the safe,high-quality,and orderly construction of the Baihetan and Wudongde underground caverns,and can be applied to other similar projects.
文摘Energy and power systems technology is a fundamental field in the civil engineering.Innovation in power generation,grid intelligence,renewable resources,propulsion and powertrains for transportation devices,etc.is a long-term challenging theme for science and technology.Especially,improving the efficiency and the emission in energy con-
文摘The pipeline all-position automatic welding machine system is a special welding system for automatically welding circumferential joint of pipeline on site, which has been widely used to the long-distance pipeline construction projects due to the advantages of automatic control for welding parameters at all-position, moving speed of bugs and operating. In this paper, the key control technologies of PAWM all-position automatic welding machine （ developed by Pipeline Research Institute of CNPC） such us the automatic control system, control software, personal digital assistant （PDA） software and complex programmable logic device （ CPLD ） program as well us the control method of welding parameter have been described detailedly. With the higher welding quality, higher welding effwiency and lower labor intensity, PA WM all-position automatic welding machine has been successfully applied in many famous pipeline construction projects.
基金supported by the National Natural Science Foundation of China(52293443,52321005,52230004)the Natural Science Foundation of Guangdong Basic and Applied Basic Research Foundation(2024A1515010085)+1 种基金Shenzhen Science and Technology Program(GXWD20231127195344001 and JCYJ20241202123735045)Shenzhen Overseas High-level Talents Research Startup Program(20200518750C).
文摘Biological contaminants(BCs),including but not limited to various pathogens and their endogenous pol-lutants such as intracellular pathogens and antimicrobial resistance genes(ARGs),are ubiquitously detected in effluent of wastewater and drinking water treatment systems which were originally designed to remove common indicator bacteria,resulting in potential impacts on public health.Although there are many emerging technologies that showing promising antimicrobial effects,few have progressed to the actual water scenarios.It’s crucial to understand the main knowledge gaps and thereby design the future developments to better meet engineering requirements.In this review,we first summarize the perfor-mance of conventional water treatment towards BCs removal.Then we showcase the advances of proof-of-concept strategies,including nanotechnology,advanced oxidation process,biological control process and integrated techniques,for BCs control in light of antimicrobial mechanisms,characteristics,proper niches in water treatment,challenges and latest improvements.Further,we proposed a semi-quantitative framework coupling life cycle assessment(LCA)and analytic hierarchy process(AHP)to assess and compare the application potential of representative pilot technologies,in which the antimicro-bial effects,economic issues and sustainability are comprehensively considered.For wastewater treat-ment,non-thermal plasma weights highest among the emerging technologies and outperforms conventional disinfection in terms of efficacy indicators(overall inactivation rate,ARGs removal rate,and growth inhibition),but fall behind overall mainly due to more energy input.Bacteriophage-based treatment has the potential to synergistically inactive the persistent pathogens in combination with con-ventional disinfection,serving as a cost-effective and environmental-friendly supplement.For drinking water treatment,the integrated photocatalytic nanocomposite receives the highest application potential among the emerging technologies and appears to be supplementary or even alternative next-generation disinfectants.This review shares valuable insights to propel the proof-of-concept antimicrobial trials towards industrial procedures.
文摘A CLLC converter is a high-frequency,high-efficiency,isolated bidirectional DC/DC converter that is widely used in DC microgrid applications.The typical topology and basic working principle of CLLC converters are introduced herein.Subsequently,both analysis methods and control technologies are reviewed.On the one hand,several steady-state analysis models are listed,consisting of a harmonic approximation-based model in the frequency domain and a state equation-based model in the time domain,and some initial dynamic models are also included.On the other hand,numerous new control technologies are presented for different targets,such as soft startup control methods from a safety perspective,synchronous rectification(SR)control methods for efficiency optimization,highly dynamic control methods for better performance,bidirectional switching control methods,and wide voltage gain control methods aimed at popular vehicle-to-grid(V2G)and electric vehicle(EV)charging application scenarios.Finally,the future evolution of CLLC resonant converters is discussed.
文摘Arsenic(As),classified as a Group I carcinogen by the International Agency for Research on Cancer(IARC),poses severe risks to ecosystems and human health through atmospheric exposure.This review synthesizes current knowledge on the sources,health impacts,and control strategies of atmospheric arsenic,with an emphasis on its global transport and toxicity.Natural sources,such as volcanic eruptions and soil erosion,contribute approximately 2.1 Gg/year;however,anthropogenic activities,notably metal smelting and coal combustion,dominate emissions,with global anthropogenic releases reaching approximately 28.6 Gg/year.Atmospheric arsenic primarily exists in two forms:particulate matter(PM_(2.5)-bound As(Ⅴ)/As(Ⅲ)and methylated species)and gaseous forms(e.g.,AsH_(3),As_(2)O_(3)),facilitating long-range transport and cross-continental pollution,as evidenced by Asian emissions contributing 39% of Arctic deposition.Advanced techniques,such as inductively coupled plasma mass spectrometry(ICP-MS)and models like GEOS-Chem,enhance emission tracking;however,gaps persist in monitoring gaseous arsenic and refining emission inventories.Health risks include lung cancer,neurotoxicity,and cardiovascular diseases,exacerbated by inhalation and dietary exposure via contaminated crops.Control technologies,including calcium-and iron-based adsorbents and industrial scrubbers,show promise but face challenges related to efficiency and cost.Regional strategies,such as China’s tightened emission limits(0.5 mg/m^(3))and the EU’s Best Available Techniques(BAT),highlight progress,yet global cooperation remains vital for transboundary mitigation.Future research should prioritize low-cost sensors,elucidating speciation-toxicity relationships,and AI-driven emission management to address data gaps and optimize policies.Integrating multidisciplinary approaches—advanced science,stringent regulations,and international collaboration—is crucial to mitigate the environmental and public health impacts of arsenic amid growing industrialization and climate change.
文摘In the current social environment,the importance of energy conservation and emission reduction is increasing day by day for both the country and its people.Electronic and electrical products,as important items for people’s production and life,require high attention from industry insiders in terms of their energy efficiency testing.Relying on energy efficiency testing can achieve the goal of energy conservation and emission reduction,and related quality control technologies will also inject new momentum into the green development of the industry.This article will discuss the practical strategies of quality control technology for energy efficiency testing of electronic and electrical products based on the significance of such testing,hoping to provide some help.
基金supported by the National Key Research and Development Project (No.2022YFB2602001)the National Research Program for Key Issues in Air Pollution Control (No.DQGG0207).
文摘Chinese diesel trucks are the main contributors to NOx and particulate matter(PM)vehicle emissions.An increase in diesel trucks could aggravate air pollution and damage human health.The Chinese government has recently implemented a series of emission control technologies andmeasures for air quality improvement.This paper summarizes recent control technologies and measures for diesel truck emissions in China and introduces the comprehensive application of control technologies and measures in Beijing-Tianjin-Hebei and surrounding regions.Remote onlinemonitoring technology has been adopted according to the China VI standard for heavy-duty diesel trucks,and control measures such as transportation structure adjustment and heavy pollution enterprise classification control continue to support the battle action plan for pollution control.Perspectives and suggestions are provided for promoting pollution control and supervision of diesel truck emissions:adhere to the concept of overall management and control,vigorously promote the application of systematic and technological means in emission monitoring,continuously facilitate cargo transportation structure adjustment and promote new energy freight vehicles.This paper aims to accelerate the implementation of control technologies and measures throughout China.China is endeavouring to control diesel truck exhaust pollution.China is willing to cooperate with the world to protect the global ecological environment.
基金financially supported by National Nature Science Foundation of China(81973284)Scientific Research Foundation of the Education Department of Liaoning Province(LJKZ0944).
文摘Plant diseases affect the cultivation of Chinese herbal medicines,while traditional chemical pesticides have many drawbacks such as environmental pollution,health risks and disruption of ecological balance.Microbiocontrol has gradually appeared in public view,and its application has become increasingly extensive.This paper reviews the disease-causing species of medicinal plants,including fungal,bacterial,nematode,viral and parasitic pests,and reviews the diseases caused by microorganisms in traditional Chinese medicine planting and their biological control by consulting Sciencedirect databases and Web of Science databases.4667 related articles were found,of which 552 were related to microbiocontrol technology and cultivation of traditional Chinese medicines.This review provides a reference for the green planting technology of traditional Chinese medicine.
基金This work was supported by the National Natural Science Foundation of China(Grant Nos.U1560206 and 51975510)the Natural Science Foundation of China in Hebei Province(Grant No.E2021203129).
文摘Thermal-force driving of roll profile electromagnetic control technology(RPECT),which can be used to adjust the roll profile,can be affected by the sequential temperature rise between the electromagnetic stick(ES)and electromagnetic control roll.Due to the limited space of ES and induction coil,the cross-sectional area of induction coil can be inevitably affected by changing the size of the ES induction zone,which can further change the energy input under the same electromagnetic parameters,the temperature rising effect and the bulging ability.To investigate this phenomenon,the effects of the radius of the induction zone on the thermal-force contribution ratio,the heating ability of ES and the temperature distribution were analyzed through an electromagnetic-thermal-structural finite element model.To ensure that the results are applicable to RPECT,the thermal energy conversion ability and thermal-force roll crown control ability under different lengths of the induction zone were analyzed.It was found that whether the current density regulation mode or the current frequency regulation mode is adopted,the cases with 20 or 25 mm radius of the induction zone have the great thermal energy conversion ability and the good thermal-force roll crown control ability.The reasonable adjustment of the length of the induction zone can reduce the radius required for the maximum energy efficiency regulation.Combined with the results of the simulation analysis,the optimization of ES based on the control ability maximization requirement is achieved,which provides the base for the design and configuration of ES in RPECT.
基金supported by the Natural Science Foundation of Hebei Province of China(Grant No.E2021203129).
文摘To achieve stable rolling,the influence of a tension mechanism of a large diameter ratio roll system on the rolling process of a strip flatness electromagnetic control rolling mill is studied.Through the analysis of the rolling deformation zone,the deformation zone composition form of a large diameter ratio roll system and a calculation formula of neutral angle under tension are proposed.To analyze the effect of front and post tensions on the rolling characteristic and the strip flatness control characteristic,a three-dimensional rolling finite element(FE)model of a large diameter ratio roll system with the function of roll profile electromagnetic control is established by FE software and verified by a strip flatness electromagnetic control rolling mill.Based on the model,the strip thickness characteristic,metal transverse flow,strip flatness state,and adjustment range of the loaded roll gap are analyzed for different front and post tensions setting values.The results show that changing the front or post tension setting values can improve the single-pass reduction rate of a large diameter ratio roll system and have little effect on the flatness control ability of the strip flatness electromagnetic control rolling mill.
文摘Automatic control technology is the basis of road robot improvement,according to the characteristics of construction equipment and functions,the research will be input type perception from positioning acquisition,real-world monitoring,the process will use RTK-GNSS positional perception technology,by projecting the left side of the earth from Gauss-Krueger projection method,and then carry out the Cartesian conversion based on the characteristics of drawing;steering control system is the core of the electric drive unmanned module,on the basis of the analysis of the composition of the steering system of unmanned engineering vehicles,the steering system key components such as direction,torque sensor,drive motor and other models are established,the joint simulation model of unmanned engineering vehicles is established,the steering controller is designed using the PID method,the simulation results show that the control method can meet the construction path demand for automatic steering.The path planning will first formulate the construction area with preset values and realize the steering angle correction during driving by PID algorithm,and never realize the construction-based path planning,and the results show that the method can control the straight path within the error of 10 cm and the curve error within 20 cm.With the collaboration of various modules,the automatic construction simulation results of this robot show that the design path and control method is effective.
基金Supported by 2024 Major Facility System Operating Costs of Ministry of Agriculture and Rural Affairs"Ledong Cashew Germplasm Resource Nursery Operating Cost of Ministry of Agriculture and Rural Affairs"2023-2024 Agricultural Germplasm Resource Conservation Project"Research on Collection,Conservation and Utilization of Cashew Germplasm Resources".
文摘In order to enhance the yield and quality of cashew,it is essential to implement high-yield cultivation techniques effectively throughout the production process.Additionally,pest control measures should be employed to provide technical support for the industrialized development of cashew.
文摘The article mainly studies the application strategy of automatic addressable single-lamp control technology in tunnel lighting.It encompasses an introduction to this technology,an analysis of the tunnel lighting system using automatic addressable single-lamp control technology,and outlines the main development direction for this technology in modern tunnel lighting.The aim is to offer insights that can inform the rational deployment of this technology,thereby enhancing the lighting control effectiveness in modern tunnels and meeting their specific lighting requirements more effectively.
基金Supported by the Twelfth Five-Year National Science and Technology Support Project(2012BAK17B03)National Nature Science Foundation of China(31401356)+1 种基金College Students’ Science and Technology Innovation Activities Project Plan(New Talent Plan) in Zhejiang Province(2013R409036)National College Students’ Innovative Entrepreneurial Training Program~~
文摘Heavy metal pol ution, especial y cadmium pol ution, has threatened the safety production of rice. The research advance on law of absorption, distribution and accumulation of cadmium in rice and on recent safety control technology of cadmium in rice grain was summarized in this paper. We hoped to lay a foundation for the safety production of rice.
基金Supported by Natural Science and Technology Fund Project in Guangxi Vocational Technical College of Agriculture(B070206)~~
文摘[ Objective ] The study aimed to effectively and timely control the occurrence and damage of Rhyrthophorus femuneus Fabricius in Nanning City, Guangxi Province. [Method]The investigation on the distribution and damage of R. ferrugineus was conducted in Nanning City, Guangxi Province. Its transmit ways were chocked, light trapping experiment, combination of artificial and chemical control, and chemical control were conducted. [ Result] The investigation indicated that there had distribution of R. ferrugineus in 70% plant nurseries and the scenic areas in Nanning City. Among the planted Hemp palm plants, the damaged vari- eties were up to 80%. The output of palm seedlings which had carried with pests was the main approach for spread and damage of R. ferrugineus. It was effective and feasible to use frequently vibration trapping light to trap adults. Pesticides were sprayed on the bellmouth of host （ central leaf）, then aging leaf sheaths or agri- cultural film was used to strap tender leaf sheath in stalks, which could achieve the purpose of controlling R. femugineus. [ Conclusion ] The control strategies of R. femugineus should be focused on controlling seedlings and the plants with tree age less than ten year; the plants with long tree age and the tall plants should adopt selection control if it was necessary, and the integrated control should be implemented on the prevention measure.
基金Supported by National Science and Technology Supporting Project (2009BADA8B01,2010BAD01B04)Kunming Comprehensive Experimental Station,National Modern Agricultural Rape Industrial Technology System(NYCYTX-00564)Development of the Yunnan Modern Agricultural Rape Industrial Technology System~~
文摘[Objective] The aim was to screen economic and environment-friendly pesticides adaptive to aphid-resistant varieties in main rape growing regions of Yunnan Province.[Method] The effects of 6 pesticides against aphids on 22 Brassica campestris materials of the main breeds in Yunnan Province,the new improved varieties in China and the core breeding materials were tested.[Result] Yunyoushuang 1,Huayou 4,Yunhuayou Early-maturing Variety No.1 and A35 showed better aphid-resistance.An optimum pesticide application strategy was to use Diyaling in sowing time,and interchangeably apply nitenpyram and imidacloprid during flowering and pod formation stages.[Conclusion] The present study had provided an important technical support for sustainable development of rape industry.
基金Supported by Agricultural Science and Technology Supporting Program of Huai'an City in Jiangsu Province(No.:SN13057)~~
文摘Reproductive organ disease of geese is an endemic and multiple infectious disease in large-scale breeding of breeding geese, especially in anti-season production, which brings a great economic loss to goose production. To make effective prevention and control of reproductive organ disease of breeding geese under the anti-season breeding mode, the characteristics of control principles of infectious diseases of the poultry and the occurrence and prevalence of reproductive organ disease must be combined, so as to carry out scientific prevention and control.At the same time, according to the climate characteristics of summer, the feeding and management of breeding geese and water quality control should also be done well, and many corresponding measures should also be taken, thus obtaining better effect.
